Improvement in



gif/Z7@ I L J NITED STATES ATENT ENCE;

ENocHrvir'ns, or CAMDEN, MAINE Specification forming part of LettersPatent No, 36,107.,

To ZZWzIo'm it' may concerner l .Bc it known that I,- ENocH PIPER', ofCamden, `in the county of Knox and State of Maine, have invented acertain new and Improved Apparatus for Preserving Animal and Vegetable-Matter by Means ,of Artificial Congelation;

and l do hereby declare that the following is a full and exactdescription thereof, reference being had to the accompanyingdrawings,making part of this specification.

My present invention is an improved apparatus for the better carryingout of the method of preserving fish and other articles, for whichLetters atent were granted to me bearing date the 19th day of March,1861; and it consists in a certain construction and arrangement of thevessels for the reception of the .freezing-mixture and the partsconnected therewith by which the charging and cleansing of the same aremuch facilitated and simplified, the effect of the apparatus renderedmore lasting and more uniform, and the use ofthe freezing mabrine, andnone vof the non-conductingsubstance, as usual. A The open-v ing forentering this chamber may be in any convenient position relativelythereto;v but I prel'erit at the top, as represented by A. y B B B aretubes passing through the charnber kM for the containing of thefreezing-mix,v

`tureN, as described in my patent before refcrre'd to. These tubes aretapering, or larger' at thetop than' at the bottom, and are placed inrowsfacrossthe chamber at proper intervals. -1 :The lower ends of thosein each row are connected `toa horizontal tube, C, extending acrossthebottorn of the chamber. The up- 'per ends' of Vthese tubes B areconnected tov v troughs or pans D, Awhich arensupported upon the sidesandvl ,aneofn's-utic'ier brace an entire row of tubes, as-shown in thedrawings. These troughs or pans D are provided wilh double covers D',filled with charcoal or other proper substance, as represented. Theirconnections with the several tubes B are formed by the aid of shortsockets d on D and extending downward into B` so as to form a suitableconnection and to allow the ready removal of D when desired.

The several tubes C are closed at both ends. At one end of each twopipes, E and F, are attached, the pipe E connecting with the extremebottom of the tube'and the pipe F at or near the top thereof. Thesepipes E and F extend out through the side A, as represented,

and are for draining and cleaning the tube G. When the apparatus is inuse, the tube E is stopped tightly with a plug, e. The .tube F isallowed always to remain open. F extends upward above the upper side ofthe tube C, and, as the brine in() cannot flow out until it has attaineda level equal to the highest part of F, it follows that the tubes C and.lower ends of the tubes B are maintained full of external warm air isallowed to enter through F and circulate through the interstices in thefreezingsniixv Apertu res are made through the doublewall A to allow thetubes E and F to pass freely, and the apertures are stopped bytight-fitting but readily-removable covers a, appliedA as represented,so as to stop the circulation of air.

Each ltube'G may be lnadeshorterv than 'repref sented, so as to allowthe moving of the same withits attachments inward or backward fromtheside a. sufiicently to draw apart or rthe whole of E and F within theinterior of this double casing A and allow the w hole, by turning itslightly, t0 be lifted from thestructure.

' By this arrangement the pans D and tubes B and C may readilybe removedfor a thorough cleaningr or anyothcr required purpose; but 4 myinvention .rarely requires to=be `so overhauled for, reasons which willappear below.

I prefer to make the tubes B andO and pans D of what isknowu asgalvanized iron, but they may be made of any' proper and convenientmaterial which isa goodconductor ofcalorie.

The ultimate effect of theappaliratus is simi-

